Video ureteroscope

Abstract

The present invention discloses a visual ureteroscope, which comprises a mirror body and a ureteroscope tip configured on the mirror body. The ureteroscope tip comprises a tip portion and an image acquisition device, wherein the tip portion is arranged at the front end of the mirror tube of the mirror body, and the tip portion has a camera end face and a suction end face located in front of the camera end face, wherein the tip portion comprises a suction hole connected to a suction channel of the mirror body and a working hole for passing a working component of the mirror body, wherein the suction hole extends axially forward from the suction channel to the suction end face to form a suction opening, and the working hole extends obliquely forward so that the working component passing through the working hole extends obliquely forward from the tip portion; the image acquisition device comprises a camera mounted on the camera end face of the tip portion, and the suction opening and the head of the working component passing through the working hole are both within the field of view of the camera.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, in particular to a visual ureteroscope. Background Art

[0002] Urinary tract stones are a common disease. According to statistics, the prevalence of urolithiasis in adults is as high as 6.5%, and its 5-year recurrence rate is as high as 50%, which is increasing year by year, seriously threatening people's health. In recent years, with the development of minimally invasive treatment technology, ureteroscopy has become an important treatment for such diseases. Existing ureteroscopy equipment for urinary system stone removal surgery mainly includes hard mirrors and soft mirrors. Among them, hard mirrors are only suitable for the diagnosis and treatment of diseases such as ureteral stones because their main body is relatively hard and cannot be bent. On the contrary, soft mirrors have gradually become an important treatment for urinary system stones. Taking ureteroscopy as an example, traditional ureteroscopy still has deficiencies in image acquisition, stone crushing, and residual stone cleaning. For example, the stone can be seen at the bend in the renal pelvis, but the optical fiber cannot be aimed, or the image is blocked by the inner wall of the renal pelvis after aiming and the stone crushing state cannot be observed, or the soft mirror head has only a small channel, and can only crush the stone through the optical fiber, but cannot efficiently clean the residual stone out of the body, resulting in low surgical efficiency and other problems.

[0003] In order to solve the above problems, clinical experts have proposed using the principle of negative pressure suction to promptly draw the crushed stones out of the body. Figure 1 As shown, a self-irrigation and drainage ureteroscope 1P is applied for in Chinese utility model patent CN212574841U, which has the advantage that a camera 10P, an irrigation port 20P, an optical fiber channel port 30P and a suction channel port 40P are all arranged on the front end surface of the ureteroscope, and the suction channel port 40P is located behind the camera 10P. The end working image is collected by the camera 10P to observe the light hitting the stone, and then the water flow is used to flush the stone and suction to form a working cycle to improve the stone removal efficiency.

[0004] However, in the actual test process, due to factors such as the camera position, fiber direction, suction channel shape, and perfusion channel layout, there are blind spots in the lithotripsy working state, making it difficult for doctors to give corresponding correct operation feedback. Figure 2 As shown, since the camera 10P is in front of the suction channel opening 40P, the suction channel opening 40P is outside the field of view of the camera 10P. Therefore, it cannot be observed whether the crushed gravel enters the suction channel opening 40P or whether the suction channel opening 40P is blocked, which brings considerable safety risks to the operation.

[0005] In addition, if Figure 2 and Figure 3As shown, although the image of the optical fiber 50P extending from the optical fiber channel port 30P can be observed, since the optical fiber 50P extending from the optical fiber channel port 30P extends toward the front of the ureteroscope along a direction parallel to the optical axis of the camera 10P, the head of the optical fiber 50P can only touch the front of the ureteroscope. In this way, once the stone is at the turning point in the renal pelvis, when the camera 10P photographs the stone, the head of the optical fiber 50P will be blocked by the renal pelvis and cannot be aimed; and when the head of the optical fiber 50P is aimed at the stone, the field of view of the camera 10P will be blocked by the renal pelvis, and the state of the stone cannot be observed. In other words, the self-irrigation and drainage ureteroscope 1P has the problem of being able to see but not hit, or being able to hit but not seeing, which will bring considerable risks to the operation. Summary of the invention

[0006] One advantage of the present invention is that it provides a visual ureteroscope, which can observe the suction opening of the suction hole while observing the optical fiber head, which helps to make an accurate judgment on the surgical status in a timely manner.

[0007] Another advantage of the present invention is that it provides a visual ureteroscope, wherein, in one embodiment of the present invention, the visual ureteroscope can make the suction opening and the head of the optical fiber both within the field of view of the image acquisition device, so that while observing the optical fiber hitting the stone, it is possible to observe in real time whether the crushed stone enters the suction opening of the suction hole, or whether the suction opening of the suction hole is blocked.

[0008] Another advantage of the present invention is that it provides a visual ureteroscope, wherein, in one embodiment of the present invention, the visual ureteroscope can get rid of the limitation of the field of view of the image acquisition device by suctioning in front and photographing in the back, so as to ensure that the suction opening and the head of the optical fiber are both within the field of view of the image acquisition device without increasing the field of view of the image acquisition device.

[0009] Another advantage of the present invention is that it provides a visual ureteroscope, wherein, in one embodiment of the present invention, the visual ureteroscope can guide the optical fiber to extend forward obliquely through the inclined working hole, so that the position of the head of the optical fiber can be changed only by rotating the ureteroscope, thereby facilitating observation of the head of the optical fiber when hitting the stone.

[0010] Another advantage of the present invention is that it provides a visual ureteroscope, wherein, in one embodiment of the present invention, the central axis of the working hole in the visual ureteroscope is located on the meridian image plane of the camera, so that the image of the optical fiber passing through the working hole coincides with the visual central axis of the camera, and the image of the optical fiber is located at the lower part of the image taken by the camera, which is convenient for conforming to human observation habits.

[0011] Another advantage of the present invention is that it provides a visual ureteroscope, wherein, in one embodiment of the present invention, the visual ureteroscope can extend the optical fiber out of the suction opening to extend forward so as to simultaneously observe the state of the head of the optical fiber and the suction opening, thereby ensuring that the visual ureteroscope works smoothly and efficiently.

[0012] Another advantage of the present invention is that it provides a visual ureteroscope, wherein, in one embodiment of the present invention, the suction end face and the optical fiber in the visual ureteroscope are on the same side of the camera, and the suction end face and the optical fiber both extend forwardly at an angle, so as to achieve a visible and hit effect while observing the suction opening.

[0013] Another advantage of the present invention is that it provides a visual ureteroscope, wherein, in one embodiment of the present invention, the meridian image plane of the camera in the visual ureteroscope passes through the suction opening of the suction hole, so that the visual center axis of the camera passes through the suction opening, which is convenient for observing the state of the suction opening.

[0014] Another advantage of the present invention is that it provides a visual ureteroscope. In one embodiment of the present invention, the visual ureteroscope can visualize the working status of the tip end through the inclined suction opening, which helps the doctor to understand the surgical status.

[0015] Another advantage of the present invention is that it provides a visual ureteroscope, wherein, in one embodiment of the present invention, the visual ureteroscope can make the suction opening cover the front end surface of the entire tip portion as much as possible, so as to increase the size of the suction opening and reduce the risk of the suction opening being blocked.

[0016] Another advantage of the present invention is that it provides a visual ureteroscope, wherein, in one embodiment of the present invention, the visual ureteroscope can place the suction opening in the field of view of the camera through the forward and inclined suction opening, which helps to observe the status of the suction opening.

[0017] Another advantage of the present invention is to provide a visual ureteroscope, wherein, in order to achieve the above advantages, no complicated structure or design is required in the present invention. Therefore, the present invention successfully and effectively provides a solution, not only providing a simple visual ureteroscope, but also increasing the practicality and reliability of the visual ureteroscope.

[0018] In order to achieve at least one of the above advantages or other advantages and purposes, the present invention provides a visual ureteroscope, comprising:

[0019] a mirror body, wherein the mirror body includes a mirror tube and a working component mounted to the mirror tube, and the mirror body has a suction channel extending axially along the mirror tube; and

[0020] A ureteroscope tip, wherein the ureteroscope tip is disposed on the scope body, and the ureteroscope tip comprises:

[0021] A tip portion, wherein the tip portion is disposed at the front end of the mirror tube, and the tip portion has an imaging end face and a suction end face located in front of the imaging end face, wherein the tip portion includes a suction hole communicated with the suction channel and a working hole for passing the working component, wherein the suction hole extends axially forward from the suction channel to the suction end face to form a suction opening, and the working hole extends obliquely forward so that the working component passing through the working hole protrudes obliquely forward from the tip portion; and

[0022] An image acquisition device, wherein the image acquisition device includes a camera installed on the camera end surface of the front end, and the suction opening of the suction hole and the head of the working component passing through the working hole are both within the field of view of the camera.

[0023] According to an embodiment of the present application, the suction end surface of the tip portion extends forward obliquely from the imaging end surface of the tip portion.

[0024] According to an embodiment of the present application, the suction end surface of the tip portion extends forward and obliquely downward from the imaging end surface.

[0025] According to one embodiment of the present application, the attraction end face of the tip end portion includes a recessed segment end face extending inwardly in an arc shape from the camera end face and a raised segment end face extending outwardly in an arc shape from the recessed segment end face, and the recessed segment end face of the attraction end face is tangent to the camera end face.

[0026] According to an embodiment of the present application, a working opening of the working hole of the leading end portion faces the suction opening of the suction hole of the leading end portion.

[0027] According to an embodiment of the present application, a central axis of the working hole of the tip portion intersects with a central axis of the suction hole.

[0028] According to an embodiment of the present application, the working hole of the leading end portion extends obliquely from top to bottom.

[0029] According to an embodiment of the present application, the working hole extends forwardly and inwardly obliquely from the rear end surface of the leading end portion to the inner wall surface of the suction hole to form the working opening on the inner wall surface of the suction hole.

[0030] According to an embodiment of the present application, a central axis of the working hole of the tip portion is located within a meridian image plane of the camera.

[0031] According to an embodiment of the present application, the central axis of the suction hole of the tip portion is within the meridian image plane of the camera.

[0032] According to an embodiment of the present application, the optical axis of the camera intersects with the central axis of the working hole.

[0033] According to an embodiment of the present application, the mirror body further includes a working channel extending axially in the mirror tube for passing the working component, and the working hole at the front end is connected to the working channel of the mirror body.

[0034] According to an embodiment of the present application, the suction channel and the working channel of the mirror body are connected to each other.

[0035] According to one embodiment of the present application, the mirror body further includes a perfusion channel extending axially in the mirror tube, and the tip portion further includes a perfusion hole connected to the perfusion channel, wherein the perfusion hole extends from the rear end face of the tip portion to the peripheral side surface of the tip portion to form one or more perfusion openings on the peripheral side surface of the tip portion.

[0036] According to an embodiment of the present application, the perfusion channel of the mirror body has an annular structure to cover around the suction channel and the working channel.

[0037] According to an embodiment of the present application, the perfusion channel of the mirror body has a special-shaped structure, and the perfusion channel is wrapped around the suction channel.

[0038] According to an embodiment of the present application, the perfusion channel and the working channel of the mirror body are connected to each other to form a complete annular channel around the suction channel.

[0039] According to an embodiment of the present application, the image acquisition device further includes at least one light source, and the light source and the camera are installed adjacent to each other at the front end.

[0040] According to an embodiment of the present application, the working component is an optical fiber for emitting laser to perform lithotripsy.

[0041] Further objects and advantages of the present invention will be fully apparent from an understanding of the following description and the accompanying drawings.

[0042] These and other objects, features and advantages of the present invention will be more fully understood from the following detailed description, accompanying drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A partial structural schematic diagram of a self-irrigation and drainage ureteroscope in the prior art is shown.

[0044] Figure 2 and Figure 3 Schematic diagrams of application of the self-irrigation and drainage ureteroscope are shown respectively.

[0045] Figure 4 1 is a schematic diagram of a visual ureteroscope according to an embodiment of the present invention.

[0046] Figure 5 A partially enlarged schematic diagram of the visual ureteroscope according to the above embodiment of the present invention is shown.

[0047] Figure 6 A schematic diagram of the application of the visual ureteroscope according to the above embodiment of the present invention is shown.

[0048] Figure 7 A partial cross-sectional schematic diagram of the visual ureteroscope according to the above embodiment of the present invention is shown.

[0049] Figure 8 A schematic top view of the visual ureteroscope according to the above embodiment of the present invention is shown.

[0050] Fig. 9 A partial cross-sectional schematic diagram of the scope body of the visual ureteroscope according to the above embodiment of the present invention is shown.

[0051] Fig.10 A schematic diagram of the lithotripsy operation of the visual ureteroscope according to the above embodiment of the present invention is shown.

[0052] Fig.11 A first example of the scope body of the visual ureteroscope according to the above embodiment of the present invention is shown.

[0053] Fig.12 A second example of the scope body of the visual ureteroscope according to the above embodiment of the present invention is shown.

[0054] Fig.13 A third example of the scope body of the visual ureteroscope according to the above embodiment of the present invention is shown.

[0055] Fig.14 A fourth example of the scope body of the visual ureteroscope according to the above embodiment of the present invention is shown. DETAILED DESCRIPTION

[0056] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0057] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0058] In the present invention, the term "one" in the claims and the specification should be understood as "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. Unless it is clearly indicated in the disclosure of the present invention that the number of the element is only one, the term "one" cannot be understood as unique or single, and the term "one" cannot be understood as a limitation on the quantity.

[0059] In the description of the present invention, it should be understood that "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through a medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0061] Application Overview

[0062] As described in the background technology, during actual testing of existing self-irrigation and drainage ureteroscopes, due to factors such as camera position, optical fiber direction, suction channel opening shape, and irrigation channel layout, there are blind spots in the lithotripsy working state, making it difficult for doctors to make corresponding correct operational feedback. For example, since the camera is in front of the suction channel opening, the suction channel opening is outside the field of view of the camera. Therefore, it is impossible to observe whether the crushed stones enter the suction channel opening or whether the suction channel opening is blocked. In addition, since the optical fiber extending from the light channel opening extends toward the front of the ureteroscope in a direction parallel to the optical axis of the camera, the head of the optical fiber can only touch the front of the ureteroscope. In this way, once the stone is at the bend in the renal pelvis, when the camera captures the stone, the head of the optical fiber will be blocked by the renal pelvis and cannot be aimed. When the head of the optical fiber is aimed at the stone, the field of view of the camera will be blocked by the renal pelvis, and the state of the stone cannot be observed. In other words, the self-irrigation ureteroscope has the problem of being able to see but not hit, or being able to hit but not see, which will bring considerable risks to the operation.

[0063] Specifically, the technical concept of the present application is to creatively design the tip of the ureteroscope while fully considering the characteristics of lithotripsy and the actual application scenarios of the ureteroscope. In this way, when performing minimally invasive treatment surgery, not only can the working status of the suction opening be observed in real time, but also the visible and tangible effect can be achieved, which helps doctors to make timely and accurate judgments on the surgical status and improve the lithotripsy efficiency.

[0064] Based on this, the present application provides a visual ureteroscope, which includes a scope body and a ureteroscope tip configured on the scope body, wherein the scope body includes a scope tube and a working part installed on the scope tube, and the scope body has a suction channel extending axially along the scope tube; wherein the ureteroscope tip includes: a tip portion, wherein the tip portion is arranged at the front end of the scope tube, and the tip portion has a camera end face and a suction end face located in front of the camera end face, wherein the tip portion includes a suction hole connected to the suction channel and a working hole for passing the working part, wherein the suction hole extends axially forward from the suction channel to the suction end face to form a suction opening, and the working hole extends obliquely forward so that the working part passing through the working hole extends obliquely forward from the tip portion; and an image acquisition device, wherein the image acquisition device includes a camera installed on the camera end face of the tip portion, and the suction opening of the suction hole and the head of the working part passing through the working hole are both within the field of view of the camera.

[0065] Illustrative Embodiments

[0066] Referring to the accompanying drawings of the present invention Figures 4 to 10 One embodiment of the present invention provides a visual ureteroscope 1, which can be used to treat diseases such as urinary stones. Those skilled in the art should understand that, for the sake of ease of explanation, this application defines the direction of the visual ureteroscope 1 entering the body as the front, and the direction outside the body as the rear.

[0067] Specifically, Figures 4 to 6As shown, the visual ureteroscope 1 may include a scope body 10 and a ureteroscope tip 20. The scope body 10 includes a scope tube 11 and a working component 12 installed on the scope tube 11, and the scope body 10 has a suction channel 101 extending axially along the scope tube 11 for discharging fluid and gravel. The ureteroscope tip 20 is suitable for being configured on the scope body 10, and the ureteroscope tip 20 may include a tip portion 21 and an image acquisition device 22. The tip portion 21 is disposed at the front end of the mirror tube 11, and the tip portion 21 has an imaging end face 2101 and a suction end face 2102 located in front of the imaging end face 2101, wherein the tip portion 21 includes a suction hole 211 communicating with the suction channel 101 and a working hole 212 for passing the working component 12, wherein the suction hole 211 extends axially forward from the suction channel 101 to the suction end face 2102 to form a suction opening 2110, and the working hole 212 extends obliquely so that the working component 12 passing through the working hole 212 extends obliquely forward from the tip portion 21. The image acquisition device 22 includes a camera 221 mounted on the imaging end face 2101 of the tip portion 21, and the suction opening 2110 of the suction hole 211 and the head 120 of the working component 12 passing through the working hole 212 are both within the field of view of the camera 221.

[0068] It can be understood that the camera end face 2101 and the suction end face 2102 of the tip portion 21 of the present application jointly form the front end face of the tip portion 21, and the rear end face of the tip portion 21 is connected to the mirror tube 11, so that the suction hole 211 extends through from the rear end face of the tip portion 21 to the front end face of the tip portion 21, so that the suction hole 211 extends forward to the suction end face 2102 to form the suction opening 2110 while being connected to the suction channel 101, so that the liquid or gravel in the human body's organs can first enter the suction hole 211 from the suction opening 2110, and then be discharged from the body through the suction channel 101.

[0069] It is worth noting that since the camera 221 in the ureteroscope tip 20 and the suction opening 2110 of the suction hole 211 are respectively located at the imaging end surface 2101 and the suction end surface 2102 of the tip 21, and the suction end surface 2102 is located in front of the imaging end surface 2101, Figure 5 and Figure 6As shown, the suction opening 2110 of the suction hole 211 will be in front of the image acquisition device 22 to achieve the technical effect of suction in front and camera in the back, so as to ensure that the suction opening 2110 of the suction hole 211 is partially or completely within the field of view of the camera 221, so as to observe the working status of the suction opening 2110 in real time, such as whether gravel enters the suction opening 2110, or whether the suction opening 2110 is blocked, etc.; at the same time, since the working hole 212 extends forward obliquely, the working part 12 passing through the working hole 212 extends forward obliquely into the field of view of the camera 221, so the camera 221 can simultaneously capture the suction opening 2110 and the head of the working part 12, which is helpful for doctors to make timely and accurate judgments on the surgical status.

[0070] More specifically, if Figure 5 and Figure 7 As shown, the working part 12 may be, but is not limited to, implemented as an optical fiber 121, so as to perform lithotripsy by emitting laser light through the optical fiber 121. It can be understood by those skilled in the art that, with different application scenarios of the intraoperative ureteroscope 1, the type of the working part 12 may also be different, and the operator may select according to the needs.

[0071] In addition, when the intraoperative ureteroscope 1 is used for diagnosis and treatment, the ureteroscope tip 20 will be inserted into the human body, that is, the ureteroscope tip 20 will be in a dark environment. Figure 5 and Figure 8 As shown, in order to capture images, the image acquisition device 22 usually needs to further include at least one light source 222, wherein the light source 222 is used to emit light to illuminate the object to be photographed, such as the renal pelvic cavity or the suction opening 2110, and the camera 221 is used to receive the light reflected back by the object to be photographed to capture the image of the object to be photographed, so that the captured image data is transmitted to the outside of the body to be displayed on a display, so that doctors and other personnel can observe the internal situation.

[0072] For example, Figure 5 and Figure 8 As shown, the camera 221 and the light source 222 are both installed on the camera end surface 2101 of the front end portion 21, and the light source 222 is located near the camera 221. That is, the camera 221 and the light source 222 are installed adjacent to each other on the front end portion 21, which helps to ensure that the light emitted by the light source 222 can be better received by the camera 221 to obtain image information after being reflected by the object to be photographed.

[0073] In detail, the light source 222 can be implemented as an LED or a cold light source, but is not limited to it, and the number of the light sources 222 can be one or more. In addition, the light source 222 can be located on one side or both sides of the camera 221, and can be configured according to needs and space, which will not be described in detail in this application. It can be understood that the camera 221 can be implemented as a camera module composed of a lens group and a CMOS image sensor, but is not limited to it, and can also be implemented as other types of camera modules, as long as it can collect image information.

[0074] According to the above embodiments of the present application, Figure 5 and Figure 7 As shown, the suction end surface 2102 of the tip portion 21 extends forward obliquely from the camera end surface 2101 of the tip portion 21, so that the image acquisition device 22 installed on the camera end surface 2101 is at the rear, and the suction opening 2110 formed on the suction end surface 2102 is at the front, and the suction opening 2110 is an oblique cut, which is convenient for ensuring that the suction opening 2110 is partially or completely within the field of view of the image acquisition device 22. It can be understood that in the above examples of the present application, the suction end surface 2102 of the tip portion 21 is implemented as an oblique cut surface. Of course, in other examples of the present application, the suction end surface 2102 of the tip portion 21 can also be implemented as a flat cut surface, in which case the camera end surface 2101 of the tip portion 21 can be located at the notch of the suction end surface 2102 or in the suction hole 211, so that the image acquisition device 22 can still capture the image of the suction opening 2110.

[0075] For example, Figure 5 and Figure 7 As shown, the suction end surface 2102 of the tip portion 21 extends obliquely downward and forward from the camera end surface 2101, so that the camera end surface 2101 is located above the suction end surface 2102, so as to achieve the arrangement effect of the camera being placed on top and the suction hole being placed on the bottom, so that the image of the suction opening 2110 will be located at the bottom of the picture taken by the camera 221, which conforms to people's observation habits and helps doctors to operate the visual ureteroscope 1 based on image feedback. It can be understood that the up, down, left, and right mentioned in this application are defined based on the camera 221 when it is placed upright, that is, the up, down, left, and right mentioned in this application correspond to the up, down, left, and right of the camera 221 when it is placed upright, respectively.

[0076] Preferably, if Figure 5 and Figure 7As shown, the suction end surface 2102 of the tip portion 21 includes a concave segment end surface 21021 extending inwardly in an arc shape from the camera end surface 2101, so as to prevent the concave segment end surface 21021 from blocking the field of view of the camera end surface 2101, and to help ensure that the suction opening 2110 located at the suction end surface 2102 falls within the field of view of the camera 221. At the same time, the size of the suction opening 2110 of the tip portion 21 can be rapidly expanded to the maximum inner diameter of the suction channel 101 on the concave segment end surface 21021, which helps to prevent large gravels from blocking the suction opening 2110.

[0077] More preferably, the attraction end surface 2102 of the tip portion 21 further includes a raised section end surface 21022 extending outward in an arc shape from the recessed section end surface 21021, so that the tip portion 21 has a blunt body structure and avoids forming a sharp head of the tip portion 21, which helps prevent the tip portion 21 from damaging human organs.

[0078] Most preferably, the raised section end face 21022 of the attraction end face 2102 is tangent to the recessed section end face 21021 of the attraction end face 2102, and the recessed section end face 21021 of the attraction end face 2102 is tangent to the camera end face 2101, so that the recessed section end face 21021 of the attraction end face 2102 smoothly extends from the camera end face 2101 to the raised section end face 21022, so as to ensure that the tip portion 21 has a smooth end face, further preventing the tip portion 21 from damaging human organs.

[0079] It is worth noting that the field of view of the camera 221 can be, but is not limited to, implemented as 120°. According to the above arrangement of the present application, the visual ureteroscope 1 of the present application can visualize the ureteroscope tip 20 without increasing the field of view of the camera 221, which helps to observe whether the suction opening 2110 of the tip 21 is blocked or whether gravel enters the suction opening 2110. Of course, in other examples of the present application, the field of view of the camera 221 can also be implemented as other angles.

[0080] According to the above embodiments of the present application, Figures 5 to 7 As shown, the working opening 2120 of the working hole 212 of the tip end portion 21 can be oriented toward the suction opening 2110 of the suction hole 211 of the tip end portion 21, so that the optical fiber 121 passing through the working hole 212 can extend from the suction opening 2110 of the tip end portion 21, which helps to ensure that the extended portion of the optical fiber 121 can be within the field of view of the camera 221, making it easy to observe the position and state of the extended portion of the optical fiber 121.

[0081] It is worth noting that, since the working hole 212 of the tip portion 21 extends forward obliquely, and the working opening 2120 of the working hole 212 corresponds to the suction opening 2110 of the suction hole 211 of the tip portion 21, the optical fiber 121 passing through the working hole 212 can extend forward obliquely from the suction opening 2110 of the tip portion 21. In this way, when the optical fiber 121 is operated to extend from the suction opening 2110 of the suction hole 211, the laser emitted through the optical fiber 121 can hit the stones in the human organ to perform a lithotripsy operation; and when the optical fiber 121 is operated to retract the suction opening 2110 of the suction hole 211, the laser emitted through the optical fiber 121 is released in the suction hole 211. At this time, if the suction hole 211 is clogged with gravel, the released holmium laser will hit the clogged gravel to achieve the effect of unblocking the suction hole 211.

[0082] Preferably, the central axis 2121 of the working hole 212 of the tip portion 21 intersects with the central axis 2111 of the suction hole 211 , so that the suction opening 2110 and the working component 12 extending from the suction hole 211 can be simultaneously photographed by the camera 221 .

[0083] More preferably, the working hole 212 of the tip 21 extends obliquely from top to bottom, so that the optical fiber 121 passing through the working hole 212 extends out of the suction opening 2110 obliquely downward from the upper side of the suction hole 211. In this way, in the picture taken by the camera 221, the image of the optical fiber 121 will also be in the lower part of the picture, which is in line with people's observation habits.

[0084] For example, Figure 7 As shown, the working hole 212 of the leading end portion 21 can extend forward and inwardly obliquely from the rear end face of the leading end portion 21 to the inner wall surface of the suction hole 211 to form the working opening 2120 on the inner wall surface of the suction hole 211. That is, relative to the suction hole 211, the working hole 212 is implemented as an inclined hole, so that the optical fiber 121 passing through the working hole 212 can extend from the inner wall of the suction hole 211 to avoid the optical fiber 121 hindering gravel or fluid from entering the suction channel 101 through the suction hole 211 and being discharged.

[0085] Preferably, if Figure 6 and Figure 7As shown, the central axis 2121 of the working hole 212 of the distal end portion 21 is located within the meridian image plane 2211 of the camera 221, that is, the optical fiber 121 extending from the suction opening 2110 extends within the meridian image plane 2211 of the camera 221, so that the image of the optical fiber 121 basically extends along the visual central axis 2210 of the camera 221, so that it will not be blocked by tissues at the bends of the renal pelvis cavity, so as to achieve the effect of being able to see and hit.

[0086] More preferably, the central axis 2111 of the suction hole 211 of the tip 21 is also within the meridian image plane 2211 of the camera 221, so that the image of the suction opening 2110 of the suction hole 211 takes the visual central axis 2210 of the camera 221 as the axis of symmetry, thereby facilitating the observation of the working status of the suction opening 2110 to the greatest extent.

[0087] It is worth noting that the optical axis 2212 of the camera 221 of the present application may be parallel to the central axis 2111 of the suction hole 211, or may not be parallel to the central axis 2111 of the suction hole 211, as long as the suction opening 2110 of the suction hole 211 is fully or partially within the field of view of the camera 221.

[0088] In addition, the angle between the central axis 2121 of the working hole 212 of the present application and the optical axis 2212 of the camera 221 can be smaller than the half field of view angle of the camera 221, so as to ensure that the working part 12 passing through the working hole 212 can be within the field of view of the camera 221.

[0089] Preferably, the optical axis 2212 of the camera 221 is biased toward the central axis 2111 of the suction hole 211, which helps to reduce the demand for a camera with a large field of view for the visual ureteroscope 1. In other words, the use of a camera with a smaller field of view can achieve the effect of simultaneously observing the suction opening 2110 and the working part 12.

[0090] More preferably, if Figure 7 As shown, the optical axis 2212 of the camera 221 intersects with the central axis 2121 of the working hole 212, so that the optical fiber 121 passing through the working hole 212 can extend to the visual center of the camera 221. In this way, it is only necessary to control the visual ureteroscope 1 so that the stone is in the visual center area of ​​the camera 221, and the optical fiber 121 can aim at the stone to hit the stone, which helps to improve the lithotripsy efficiency and reduce the risk of accidentally injuring the tissue in the renal pelvis.

[0091] According to the above embodiments of the present application, Figure 7 As shown, the mirror body 10 may further include a working channel 102 extending axially in the mirror tube 11, for wearing the working component 12, and the working hole 212 of the tip 21 is connected to the working channel 102, so that the working component 12 worn in the working channel 102 can pass through the working hole 212 to extend forwardly and obliquely out of the tip 21, so as to be within the field of view of the camera 221. It can be understood that the working component 12 after penetrating the working channel 102 and the working hole 212 is movable, so that the length of the working component 12 extending from the working hole 212 is increased or decreased by pushing and pulling the working component 12, so as to facilitate hitting stones at different positions in the renal pelvis. Exemplarily, the optical fiber 121 can be movably installed in the working channel 102, so that the optical fiber 121 can be extended or retracted from the working hole 212 by pushing and pulling the optical fiber 121.

[0092] In other words, the optical fiber 121 can be movably installed in the working channel 102, so that the optical fiber 121 can be extended or retracted from the suction opening 2110 of the suction hole 211 by pulling the optical fiber 121. In this way, when the optical fiber 121 is operated to extend from the suction opening 2110 of the suction hole 211, the laser emitted through the optical fiber 121 can hit the stones in the human organ to perform a lithotripsy operation; and when the optical fiber 121 is operated to retract the suction opening 2110 of the suction hole 211, the laser emitted through the optical fiber 121 is released in the suction hole 211. At this time, if the suction hole 211 is blocked by gravel, the released holmium laser will hit the blocked gravel to achieve the effect of unblocking the suction hole 211.

[0093] For example, in the first example of the present application, Figure 7 and Fig.11 As shown, the suction channel 101 and the working channel 102 in the mirror body 10 may be independent of each other, that is, the suction channel 101 and the working channel 102 extend between the front end and the rear end of the mirror body 10, respectively. It is understandable that, since the suction channel 101 and the working channel 102 are independent of each other, the working component 12 (such as the optical fiber 121) installed in the working channel 102 will not enter the suction channel 101, so as to prevent the working component 12 from interfering with the movement of fluid or gravel in the suction channel 101 and avoiding congestion of the suction channel 101.

[0094] It is worth noting that in the second example of the present application, Fig.12As shown, the suction channel 101 and the working channel 102 in the mirror body 10 may also be interconnected, that is, the suction channel 101 and the working channel 102 may be implemented as the same channel, but because the working hole 212 extends obliquely from the outside to the inside from the side wall of the suction hole 211 of the tip 21, the optical fiber 121 passing through the working hole 212 will extend along the inner wall of the suction channel 101, that is, the optical fiber 121 first extends along the inner wall of the suction channel 101, and then passes through the working hole 212 and extends obliquely out of the suction opening 2110 of the suction hole 211. At this time, the optical fiber 121 can still avoid interfering with the movement of fluid or gravel in the suction channel 101 to a certain extent, thereby avoiding congestion in the suction channel 101. It can be understood that when the suction channel 101 and the working channel 102 of the mirror body 10 are the same channel, the structure of the mirror body 10 will be simplified to the maximum extent, which will help reduce the manufacturing difficulty and cost of the mirror body 10; at the same time, once gravel blockage occurs in the suction channel 101 of the mirror body 10, the optical fiber 121 can be pulled so that the end of the optical fiber 121 is located at the gravel blockage in the suction channel 101, so that the laser emitted by the optical fiber 121 can hit the blocked gravel to clear the suction channel 101.

[0095] According to the above embodiments of the present application, Figure 5 and Fig. 9 As shown, the scope body 10 of the visual ureteroscope 1 may further include an irrigation channel 103 for transmitting irrigation fluid (such as water, etc.), and the tip portion 21 of the ureteroscope tip 20 further includes an irrigation hole 213 connected to the irrigation channel 103, which is used to discharge the irrigation fluid transmitted through the irrigation channel 103 from the tip portion 21 to be injected into human organs. In this way, when the visual ureteroscope 1 is operated, after the visual ureteroscope 1 is inserted into the kidney, an irrigation fluid such as water first flows through the irrigation channel 103 to the irrigation hole 213 of the distal end 21, and then enters the kidney through the irrigation hole 213 to achieve an irrigation operation; working parts 12 such as optical fibers 121 extend from the working channel 102 to the working hole 212 to extend out of the suction opening 2110 of the suction hole 211 to perform a lithotripsy operation; at the same time, excess irrigation fluid and gravel can flow from the suction hole 211 to the suction channel 101 to be discharged from the body.

[0096] Preferably, if Fig. 9 and Fig.10As shown, the perfusion hole 213 of the tip portion 21 extends from the rear end face of the tip portion 21 to the peripheral side surface 2103 of the tip portion 21 to form one or more perfusion openings 2130 on the peripheral side surface 2103 of the tip portion 21, so that the perfusion liquid flows outward from the peripheral side surface 2103 of the tip portion 21 through the perfusion openings 2130 of the perfusion hole 213, so as to form a controllable and orderly fluid circulation in front of the tip portion 21, which helps to drive the gravel to the suction opening 2110 in all directions for efficient suction.

[0097] It can be understood that according to the law of conservation of momentum and the principle of negative pressure attraction in fluid mechanics, the kinetic energy of the perfusion fluid during high-speed flow is used to push the heavy fragmented stones (lithotomies) deposited at the bottom of the renal pelvis to move, and after encountering the obstruction of the inner surface of the renal pelvis, the stones change direction and move upward along the inner wall of the renal pelvis. When the stones reach the front of the suction opening 2110, the pressure near the suction opening 2110 is low, and the perfusion fluid is forced to flow toward the suction opening 2110, thereby driving the stones into the suction opening 211 until they are excreted from the body. The continuous liquid perfusion and attraction in this process can make the perfusion fluid form a continuous cyclic motion trajectory (vortex) of approximately a semicircle between the perfusion opening 2130 and the suction opening 2110. By adjusting the flow rate and the size of the attraction force, the diameter or motion trajectory of the semicircle can be controlled, and targeted and controllable attraction of the stones can be achieved, greatly improving the stone removal efficiency.

[0098] In addition, since the area of ​​the outer peripheral side surface 2103 of the tip portion 21 is larger, the number and size of the perfusion openings 2130 of the perfusion hole 213 do not have to be restricted by the smaller end surface of the tip portion 21, so that the effective area of ​​the perfusion openings 2130 of the perfusion hole 213 can be greatly increased, which helps to form a larger perfusion flow under a relatively low perfusion pressure, and form a larger suction flow in the suction hole 211 under the same negative pressure, thereby achieving an optimal perfusion-suction ratio and enhancing the stone removal efficiency.

[0099] For example, in the above-mentioned first example and second example of the present application, if Fig.11 and Fig.12 As shown, the perfusion channel 103 of the mirror body 10 has an annular structure to cover around the suction channel 101 and the working channel 102 .

[0100] It is worth noting that in the above examples of the present application, the perfusion channel 103 in the mirror body 10 is independent of the suction channel 101 and the working channel 102 respectively, but in other examples of the present application, the perfusion channel 103 may also be connected to the working channel 102.

[0101] For example, in the third example of the present application, Fig.13 As shown, the working channel 102 and the perfusion channel 103 in the mirror body 10 may also be interconnected, that is, the working channel 102 and the perfusion channel 103 of the mirror body 10 are interconnected to form a complete annular channel around the suction channel 101, which helps to simplify the structure of the mirror body 10 and reduce the manufacturing cost of the ureteroscope 1 used during surgery.

[0102] Of course, in the fourth example of the present application, Fig.14 As shown, the perfusion channel 103 in the mirror body 10 may also have a special-shaped structure, and the working channel 102 and the perfusion channel 103 are independent of each other, wherein the perfusion channel 103 and the working channel 102 are located around the suction channel 101 to cover the suction channel 101 together, so as to increase the effective diameter of the perfusion channel 103 without increasing the outer diameter of the mirror tube 11 of the mirror body 10, thereby helping to increase the perfusion flow rate. It is understandable that in this example of the present application, the suction channel 101 of the mirror body 10 may have a circular cross section or an elliptical cross section, and the perfusion channel 103 of the mirror body 10 may have a notched annular cross section to partially cover the surrounding of the suction channel 101, and form a notch around the suction channel 101 for arranging the working channel 102, so that the perfusion channel 103 and the working channel 102 jointly surround the suction channel 101.

[0103] According to the above embodiments of the present application, Figure 4 As shown, the scope body 10 of the visual ureteroscope 1 may further include an operating portion 12 disposed at the rear end of the scope tube 11, and the scope tube 11 may include an insertion portion 111 extending forward from the operating portion 12 and a bendable portion 112 extending forward from the insertion portion 111, wherein the ureteroscope tip 20 is disposed at the bendable portion 112 of the scope tube 11, and the bendable portion 112 of the scope tube 11 can be operated by the operating portion 12 to bend or straighten, so that the ureteroscope tip 20 is close to the target position, such as the stone position in the renal pelvis, etc.

[0104] In addition, if Figure 4As shown, the operating part 12 of the mirror body 10 may include a suction interface 1201 connected to the suction channel 101, a working interface 1202 connected to the working channel 102, and a perfusion interface 1203 connected to the perfusion channel 103, wherein the suction interface 1201 of the operating part 12 is suitable for connecting to a suction device to attract water and gravel to move from the suction channel 101 for discharge through the suction device; wherein the working interface 1202 is used to insert the working component 12, so that the working component 12 is inserted into the working channel 102 via the working interface 1202; wherein the perfusion interface 1203 is suitable for connecting to a perfusion device to inject perfusion liquid into the perfusion channel 103 through the perfusion device.

[0105] In particular, if Figure 4 As shown, the operating part 12 of the mirror body 10 may further include an information interface 1204 communicatively connected to the image acquisition device 22, wherein the information interface 1204 is suitable for connecting to a terminal device such as a display screen, so as to communicatively connect the image acquisition device 22 and the terminal device, that is, the information acquired by the image acquisition device 22 can be processed or displayed by the terminal device.

[0106] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A visual ureteroscope, characterized in that: include: A mirror body, wherein the mirror body includes a mirror tube and a working component mounted on the mirror tube, and the mirror body has a suction channel extending axially along the mirror tube; and A ureteroscope tip, wherein the ureteroscope tip is configured on the scope body, and the ureteroscope tip includes: A tip portion, wherein the tip portion is disposed at the front end of the mirror tube, and the tip portion has an imaging end face and a suction end face located in front of the imaging end face, wherein the tip portion includes a suction hole connected to the suction channel and a working hole for passing the working component, wherein the suction hole extends axially forward from the suction channel to the suction end face to form a suction opening, and the working hole extends obliquely forward so that the working component passing through the working hole extends obliquely forward from the tip portion, wherein the working opening of the working hole of the tip portion faces the suction opening of the suction hole of the tip portion, and the working hole extends obliquely forward and inward from the rear end face of the tip portion to the inner wall surface of the suction hole to form the working opening on the inner wall surface of the suction hole; and An image acquisition device, wherein the image acquisition device includes a camera installed on the camera end surface of the tip portion, and the suction opening of the suction hole and the head of the working component passing through the working hole are both within the field of view of the camera; the central axis of the working hole of the tip portion is within the meridian image plane of the camera, and the central axis of the suction hole of the tip portion is within the meridian image plane of the camera.

2. The visual ureteroscope according to claim 1, wherein: The suction end surface of the leading end portion extends obliquely forward from the imaging end surface of the leading end portion.

3. The visual ureteroscope according to claim 2, wherein: The suction end surface of the tip portion extends forward and obliquely downward from the imaging end surface.

4. The visual ureteroscope according to claim 3, wherein: The attraction end surface of the tip portion includes a concave segment end surface extending inwardly in an arc shape from the imaging end surface and a convex segment end surface extending outwardly in an arc shape from the concave segment end surface, and the concave segment end surface of the attraction end surface is tangent to the imaging end surface.

5. The visual ureteroscope according to claim 4, wherein: A central axis of the working hole of the tip portion intersects with a central axis of the suction hole.

6. The visual ureteroscope according to claim 5, wherein: The working hole of the front end portion extends obliquely from top to bottom.

7. The video ureteroscope according to claim 1, wherein: The optical axis of the camera intersects with the central axis of the working hole.

8. The visual ureteroscope according to any one of claims 1 to 4, wherein: The mirror body further includes a working channel extending axially in the mirror tube for passing the working component, and the working hole of the front end portion is connected to the working channel of the mirror body.

9. The video ureteroscope according to claim 8, wherein: The suction channel and the working channel of the mirror body are communicated with each other.

10. The video ureteroscope according to claim 9, wherein: The mirror body further includes a perfusion channel extending axially in the mirror tube, and the tip portion further includes a perfusion hole connected to the perfusion channel, wherein the perfusion hole extends from the rear end face of the tip portion to the peripheral side surface of the tip portion to form one or more perfusion openings on the peripheral side surface of the tip portion.

11. The video ureteroscope according to claim 10, wherein: The perfusion channel of the mirror body has an annular structure to cover around the suction channel and the working channel.

12. The video ureteroscope according to claim 10, wherein: The perfusion channel of the mirror body has a special-shaped structure, and the perfusion channel is wrapped around the suction channel.

13. The video ureteroscope according to claim 12, wherein: The perfusion channel and the working channel of the mirror body are connected to each other to form a complete annular channel around the suction channel.

14. The video ureteroscope according to any one of claims 1 to 4, wherein: The image acquisition device further includes at least one light source, and the light source and the camera are installed adjacent to each other at the front end.

15. The video ureteroscope according to any one of claims 1 to 4, wherein: The working component is an optical fiber, which is used to emit laser to perform lithotripsy.

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